Sheet-guide for folding-machines



E. SCHEICK.

S HEET GUIDE FOR FOLDING MACHINES.

APPLICATION FILED DEC. I6. 1919.

PatentedJune 15,1920.

I W/TiJESSES ,4

,4 TTORNEYS UNITED STATES PATENT OFFICE.

EDWARD scHEIcK, 'oE ARLINGTON, NEW JERSEY.

SHEET-GUIDE FOR FOLDING-MACHINES.

Specification of Letters Patent. P te t d J 11119 15, 1920.

Application filed December 16, 1919. Serial in. 345,359.

tively longand narrow strips of paper, or

other materiahto the folding rolls, on what is known as the Clevelandfolding machine, but it is understood that it is adapted for use inother machines employing a sheet feed mechanism, and where an accuratefold 'is desired. a

It is to be understood that no claim is'here made broadly to ameans offeeding generally paper to a folding mechanism because such devices haveheretofore been employed. However in the feeding devices. heretoforeused, the operation" of the same have been unsatisfactory for example infeeding relatively long and narrow strips tothe folding mechanism. Therehas been a tendency for the paper to tilt, as it is being fed, so thatwhen it reaches for example the first pair of rollers of the foldingmechanism,-the strip is fed thereto at an-angle, so that it isnotproperly folded.

One of. he objects of this invention is to provide animproved feeddevice which will overcome the difliculties above noted, and which willpermit relatively long and narrow, strips of paper or the like, tobe fedto a folding mechanism so that the said. strip will receive an accuratefold.

A further object ofthisinvention is to provide in a sheet folding deviceemploying a feed means including feed rolls,and a sheet guide for oneedge of the sheet, a means which will enable relatively long and nar-'row strips to be accurately fed to a folding mechanism, the last namedmeans including-a device for holding the other edge of the strip inspaced relationfrom the feed rolls, .andproviding a frictional drag onsaid edge; I a Stilla further object of this invention is to provideaimeans adjustable to different widths, for effecting an adjustablefriction dragupon a longitudinally extending portion of theunder surfaceof the strip.

. Generally, the above objects are accomincorrect folding of strips.

plished by providing a longitudinally extending friction bar preferablyhaving a relatively smooth surface, and a means for adjusting the barlaterally of the table, and

-hol'ding the same spaced above the table whereby a friction drag may beexerted upon the under surface atone side of the-strip as it is fed tothe folding mechanism.

Other objects and advantages will be apparent from the accompanyingdrawings showing for example a practical embodiment of the invention,and from the following description and the appended claims.

In the accompanying drawingsforming a part of this, specification,similar characters of reference deslgnatecorresponding parts in theseveral views.

Figure 1 is a .top plan View showing a paper feed mechanism embodyingthe invention. y I

Fig. 2 is a sectionalview looking in the direction of the arrowsandtakengenerally on the line2-2 of Fig. 1, showing the manner inWhich one sideof the strip is held on the friction bar in spaced relation to the paperfeeding means. I

Fig... 3 is an enlarged perspective view of the attachment.

. Fig. 4 is a sectional view looking inthe direction of the arrows andtaken generally on thelines 4:4= of .Fig. 1.

Fig. 5 is a view showing the correct and With reference to theaccompanying drawings, the invention is shown applied to the feedingdevice of what is known as tain an accurate fold for a relatively longand narrow strip of paper and the like. The

mechanism for feeding a relatively, longand narrow strip 1, is shown ascomprislng a feed table having a plurality of spaced feed rolls 2rotatably mounted on said table, and

driven belt 3 being arranged to contact-with the'surface of the saidrolls to drive the same. 'A plurality of spaced bars 4 arearrangedbetween the spaced feed rolls 2, the upper face of the barsbeing slightly below the outer surface of the rollers, so'that as thestrip 1' is placed thereon, thesaid strip will he fed or carried in-thedirection indicated by the" arrow, to the folding roll 5 of beingangularly disposed thereon,as shown n Fig. 1,a sultable means such as apower the folding mechanism now shown. A side feed guide 6 is arrangedat one side of the feed table, to function as a guide for one side edgeof the strip 1 as the strip is fed along the table. In order to form anaccu rately folded sheet such as represented at A Fig. 5, the strip 1should be fed to the roll 5, so that the axis of the strip is normal tothe axis of the roll. In practice, it has been found that in feediiig'relatively long and narrow strips to the folding mecha nism, there is atendency for the strip to tilt in a manner represented in Fig. 1 by thestrip '7, so that the strip is fed to the roll 5 of the foldingmechanism, at an angle, resulting; in an impro fold by the foldingmechanism, an exam )le for instance of which is shown at B in 1 lg 5.

It has been found that by providing a means for exerting a friction dragupon the under surface of the strip, that it is possible to feed arelatively long and narrow strip to the'folding mechanism so that the ofthe strip 1, is normal to that of the roll 5, one side edge 8 of thestrip being in contact with the side guide 6. In order toeffect afriction drag upon a longitudinally extending portion 9 of the bottom orunder surface of the strip 1, a friction drag bar 10 having preferablyrelatively smooth surface is provided together with spacing members 11adjustable on the bar for holding the said bar spaced above the table,the said spacing members in the form shown comprising a head portion 12adapted to rest upon the bars d, and a stem portion 13- extendingthrough a slot 1% formed in the bar 10-, a suitable spring clip 15 beingconnected with the stem in or ler to adjust the spacing members 11longitudinally of the bar 10. It is to be understood however that anysuitable spacing means may be provided. As a means of adjusting thefriction bar 10 laterally of the feed table for strips of differentwidths, and as a means of varying the width of the strip 1 overlying thefriction bar 10 to vary the friction, arms 16-17 are provided one end ofeach.- of said arms being suitably connected to the friction bar 10',the other end thereof being supported by the feed table 18" by anadjustable connection which permits adjustment of the friction bar 10,laterally of the table. In the form shown, the arms are provided with aslot 19, a spacing block 20 being provided to' hold the arms in spacedrelation to the table, a bolt 21 being provided which extends through atable and the slot of. the arm, a wing nut 22'being threaded upon thebolt- 2'1 to hold the arm in fixed adjusted position. It is to beunderstood however that any other suitable adjusting means may beprovided.

It is to be noted that when the friction bar 10 is adjusted laterally ofthe table either to vary the width of the overlying edge of the strip,or to set the bar for strips of different width, that by reason of theangularly arranged bars and rollers, it may be necessary to move thespacing members 11 longitudinally of the bar 10 so that they may restupon the bars 4:. In operation, the friction drag attachment is adjustedlaterally of the feed table so when one side 8 of the strip is incontact with the side guide 6, a certain portion of the other side 23will overlie the friction bar 10. As the angularly arranged rollers 2are rotated, thestrip 1 is fed toward the folding mechanism, and bringsthe edge 8 of the strip 1 in contact with the side guide 6, and thestrip is prevented from tilting by reason of the friction drag exertedupon the under surface by the friction bar 10. 7

While one practical embodiment of the invention has been shown it is tobe understood that certain changes and i'nodificat'ions may be madewithout departing from the spirit and scope of this invention.

. Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 11. A paper feed mechanism including powerdriven rollers therefor, a side guide adapted to" guide one edge'of astrip of paper, and a friction bar having a relatively smooth surfacespaced above said rollers and extending longitudinally of the feed tablefor holding one edge of the strip spaced from the rollers throughout thetravel thereof, whereby a friction drag is exerted upon one edge of thestrip to prevent the said strip from being fed at an angle to said feedtable,rand means for adjusting said friction bar laterally of the feedtable.

2. In a device of the characterdescr'ibed a friction bar adapted to holdone edge of a strip of paperin spaced relation to a feed mechanism,rotatab'l'y mounted on a feed table, the said bar having a'plur'ality ofarms extending laterally of the table, andmeans connecting said armswith the table for obtaining adjustment of such friction bar laterallyof the table.

3. In a device of the character described including in combination afeed table having spaced bars angularly arranged thereon, power drivenfeed rolls arranged between adjacent bars, a feed side guide adapted toguide'one side of a strip of paper longitudinally of the table, foldingmechanism at one end of the table, and a means spaced above the tableand extending longitudinally thereof spaced from the side guide, thesaid means being adapted to hold the other edge of the strip spaced fromsaid feed rollers mechanism which consists in providing a feed tableincluding a plurality of spaced bars, power driven feed rollers arrangedbe tween said bars, the said bars and said roll-- ers being angularlyarranged relative to the table, a feed side guide arranged at one sideof the table to function as a guide for one edge of a strip, and a meansfor effecting a friction drag upon a portion of the under side of thestrip on the edge opposite the registered edge throughout the travel ofthe strip longitudinally of the table.

5. A paper feed device for a Cleveland folding machine adapted to feedrelatively long and narrow strips to the folding Inechanism the saidfeeding device including spaced rollers angularly arranged upon a feedtable, a side feed guide at one side of the table to act as a guide forone side of a strip, and a stationary means adjustable to effect afriction drag upon a longitudinally extending portion of the under sideof the strip at the edge opposite to the registered edge. 1

6. A paper feed device for a Cleveland folding'machine adapted to feedrelatively long and narrow strips to the folding mechanism, the saidfeeding device including tered edge, the said means including a frictionbar having a relatively smooth surface extending longitudinally of thetable, means adjustable on said bar for supporting the bar in spacedrelation to the table, and

means for. adjusting the said friction bar laterally of the table.

EDWARD SOHEICK.

